They want more d’oh! The voices of The Simpsons – Dan Castellaneta (Homer), Nancy Cartwright (Bart), and Hank Azaria (Moe, Apu) among them – have been playing hooky for the past month while their agents try to wrangle raises of $235,000 per ep for season 16, debuting in September (the actors now make $125,000 apiece). So far, producer 20th Century Fox TV isn’t budging (the cast staged a similar protest in ‘98 to boost their $25,000 salaries. Fox ultimately obliged). ”They are an incredibly talented bunch, as well as very well compensated,” says a Fox exec. ”We’re just not willing to go as far as they demand.” A rep for the actors says, ”The Simpsons cast has not walked away…. Fox walked away from the negotiating table.”